Lengths of Curves

Find the length of the curve

from to

Let

After this I'm unsure of what to do. For example in the practice problems we had under the square root and what we did was let and and continue on from there. But in this problem I'm a little bit confused. I guess because the concept hasn't fully sank in yet.

After this I'm unsure of what to do. For example in the practice problems we had under the square root and what we did was let and and continue on from there. But in this problem I'm a little bit confused. I guess because the concept hasn't fully sank in yet.

After this I'm unsure of what to do. For example in the practice problems we had under the square root and what we did was let and and continue on from there. But in this problem I'm a little bit confused. I guess because the concept hasn't fully sank in yet.